JPWO2012165511A1 - Disease control method of rice - Google Patents
Disease control method of rice Download PDFInfo
- Publication number
- JPWO2012165511A1 JPWO2012165511A1 JP2013518141A JP2013518141A JPWO2012165511A1 JP WO2012165511 A1 JPWO2012165511 A1 JP WO2012165511A1 JP 2013518141 A JP2013518141 A JP 2013518141A JP 2013518141 A JP2013518141 A JP 2013518141A JP WO2012165511 A1 JPWO2012165511 A1 JP WO2012165511A1
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- JP
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- Prior art keywords
- rice
- treatment
- water
- seed
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/80—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/06—Coating or dressing seed
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Environmental Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Plant Pathology (AREA)
- Pest Control & Pesticides (AREA)
- Zoology (AREA)
- Agronomy & Crop Science (AREA)
- Toxicology (AREA)
- Soil Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Pretreatment Of Seeds And Plants (AREA)
- Catching Or Destruction (AREA)
Abstract
要約課題 イネへの安全性が高く、また、簡便且つ効率的で労働負荷が少なく、十分な効果を発揮し得るイネの病害防除方法を提供する。解決手段 3−(3,4−ジクロロイソチアゾール−5−イルメトキシ)−1,2−ベンゾチアゾール−1,1−ジオキシドを有効成分とする農薬組成物を用いて、発芽前のイネ種子に浸漬処理、粉衣処理、塗沫処理、噴付処理から選ばれる少なくともひとつの処理を行うことにより、イネに薬害を生じることなく、当該イネ種子の発芽から収穫期に至るまでの長期に渡って病害防除効果を持続できる。選択図 なしAbstract PROBLEM TO BE SOLVED: To provide a rice disease control method that has high safety to rice, is simple and efficient, has a low labor load, and can exert a sufficient effect. Solution 3- (3,4-Dichloroisothiazol-5-ylmethoxy) -1,2-benzothiazole-1,1-dioxide is used as an active ingredient to immerse the rice seeds before germination. By performing at least one treatment selected from powdering treatment, smearing treatment, and spraying treatment, disease control over a long period from germination of the rice seed to the harvesting period without causing phytotoxicity to rice The effect can be sustained. Selection diagram None
Description
本発明は、イネの病害防除方法に関する。詳細には、イネ種子に直接有効成分を作用させることによりイネの病害を防除する方法に関するものである。 The present invention relates to a rice disease control method. More specifically, the present invention relates to a method for controlling rice diseases by causing active ingredients to act directly on rice seeds.
稲作を営むうえで、イネ病害とその対策は古今問わず重要な課題である。そして、これまでに、イネ病害防除活性を示す様々な有効成分が研究され、多数のイネ病害防除剤が開発・商品化されてきた。 In rice cultivation, rice diseases and countermeasures are important issues both old and new. So far, various active ingredients exhibiting rice disease control activity have been studied, and a large number of rice disease control agents have been developed and commercialized.
こうしたイネ病害防除剤は、農薬製剤として設計された性質に従って、様々な施用形態をとっている。すなわち、茎葉部に直接散布する茎葉散布、水田の田水面に散布する水面施用、本田移植前のイネ稚苗育成の育苗箱に直接散布する苗箱施用、本田移植後、移植苗の側条部へ施用する側条施用、更には発芽前のイネ種子に直接薬剤を施用する種子処理等を挙げることができる。 These rice disease control agents take various application forms according to the properties designed as a pesticide preparation. In other words, foliage sprayed directly on the foliage, water surface application on the paddy field, rice seedling application applied directly to the nursery box for rice seedling growth before transplanting to the rice field, after transplanting to the side of the transplanted seedling Examples include side strip application to be applied to the seed, and seed treatment in which the chemical is directly applied to the rice seeds before germination.
前記の各施用形態の違いは、農薬施用にかかる作業の質を異にする。特に、近年の我が国では、農業従事者人口の減少と平均年齢の高齢化が顕著であり、農作業における労働負荷の軽減が急務となっているため、作業効率に優れ、病害虫及び雑草の効率的な防除技術・方法等の導入が不可欠となってきている。そして、上記施用形態の中でも、種子処理は、最も簡便な方法の一つである。 The difference in each of the above-mentioned application forms makes the quality of the work concerning application of agricultural chemicals different. In particular, in Japan in recent years, the decrease in the population of farmers and the aging of the average age are remarkable, and it is an urgent task to reduce the labor load in farm work. Therefore, the work efficiency is excellent, and pests and weeds are efficient. Introduction of control techniques and methods has become indispensable. Among the application forms, seed treatment is one of the simplest methods.
現在の稲作では、イネ種子を播種するにあたり、通常、それに先立って、イネ種子の発芽を促すための予措工程がとられる。すなわち、イネ種子を15℃前後の冷水に浸漬し、適宜水を換えながら6日間程度継続してイネ種子に水分を吸収させる浸種工程と、次いでこのイネ種子を30℃前後の温水に24時間程度浸漬し、熱に曝露させる催芽工程が実施される。種子処理では、これらの工程前又は工程中に薬剤施用を行う。 In the current rice cultivation, when sowing rice seeds, a precautionary process for promoting germination of rice seeds is usually taken prior to sowing. That is, the rice seed is immersed in cold water at around 15 ° C. and the water is absorbed by the rice seed continuously for about 6 days while changing the water as appropriate. Then, the rice seed is immersed in warm water at around 30 ° C. for about 24 hours. A sprouting step is carried out, which is immersed and exposed to heat. In seed treatment, chemical application is performed before or during these steps.
種子処理の態様を更に細分類すると、前記予措工程に使用される水の一回分について、薬剤を投入した薬液を用いる種子浸漬、予措工程前のイネ種子に粉末状の薬剤をまぶす種子粉衣、同じく予措工程前のイネ種子に水に溶いた薬剤を滴下又はスプレーする種子塗沫、種子噴付等の処理を挙げることができる。 When the seed treatment mode is further subdivided, for one batch of water used in the preparatory step, seed soaking using a chemical solution containing the chemical, seed powder that scatters the powdered chemical on rice seeds before the preparatory step Examples of the treatment include seed smearing and seed spraying, in which a drug dissolved in water is dripped or sprayed on the rice seeds before the pretreatment process.
種子浸漬では、浸種工程又は催芽工程で用いる水に所定量の薬剤を投入して、均一な薬液となるように攪拌する作業が必要となるが、その余の作業内容は通常の予措工程と何ら変わらない。一方、粉衣処理、塗沫処理及び噴付処理では、市販の種子処理装置にイネ種子と所定量の薬剤を投入し、排出されたイネ種子を予措工程に供すればよい。いずれの方法も、広大な水田に薬剤を散布する他の方法と比べて、非常に簡便である。そこで、種子処理が可能なイネ病害防除剤の使用によって稲作における労働負荷の軽減化が期待され、特許文献1に記載の方法などのいくつかの例が示されている。 In seed soaking, it is necessary to add a predetermined amount of chemical to the water used in the soaking process or germination process, and to stir so as to obtain a uniform chemical solution. No change. On the other hand, in the dressing process, the smearing process, and the spraying process, rice seeds and a predetermined amount of chemicals may be introduced into a commercially available seed processing apparatus, and the discharged rice seeds may be subjected to a preparatory process. Both methods are very simple compared to other methods of spraying a drug on a large paddy field. Therefore, the use of a rice disease control agent capable of seed treatment is expected to reduce the labor load in rice cultivation, and some examples such as the method described in Patent Document 1 are shown.
しかしながら、種子処理はイネの一生のうち最も未成熟でデリケートな状態である種子に対して高濃度の薬剤を直接接触させる方法であるから、薬害を生じやすいという問題がある。そのため、理論上種子処理に用いることができるとされている薬剤はいくつかあるが、現在、種子処理におけるイネへの安全性が高く、実用上種子処理に適用できるとして農薬登録までされた薬剤はごく限られている。 However, seed treatment is a method in which a high concentration of drug is directly brought into contact with the seed that is the most immature and delicate state of the life of rice, and thus there is a problem that it is likely to cause phytotoxicity. For this reason, there are several drugs that can theoretically be used for seed treatment, but currently, there are many drugs that are highly safe for rice in seed treatment and have been registered as agricultural chemicals for practical use in seed treatment. Very limited.
また、種子処理という施用形態は、薬剤を処理してからイネ病害の発生時期を迎えるまでの期間が他の防除方法よりも長いという特徴がある。このため、比較的遅い時期(例えばイネ生育後期)に発生するイネ病害に対しては、種子処理した有効成分の効能が持続せず、十分な防除効果を発揮することができないという問題がある。したがって、現在、種子処理によるイネ病害防除は、専ら幼苗期までのイネ病害を防除する目的で行われている。それ以降に発生するイネ病害については、別途、対象イネ病害の発生時期前後に、水田に薬剤を散布する農作業が必要であり、種子処理による労働負荷の軽減は未だ不十分なものである。 Moreover, the application form of seed treatment is characterized in that the period from the treatment of the drug to the occurrence of the rice disease is longer than other control methods. For this reason, there is a problem that the efficacy of the seed-treated active ingredient is not sustained and a sufficient control effect cannot be exerted against rice diseases that occur in a relatively late period (for example, the late stage of rice growth). Therefore, at present, rice disease control by seed treatment is performed exclusively for the purpose of controlling rice diseases until the seedling stage. For rice diseases that occur after that, it is necessary to separately carry out agricultural work to spread the chemicals on the paddy fields before and after the occurrence of the target rice diseases, and the reduction of labor load by seed treatment is still insufficient.
更に、粉衣処理、塗沫処理等は有効成分の物理的利用率にも課題を抱えている。これらの処理によって、イネ種子の表面に有効成分を付着させても、その後の予措工程等において、イネ種子は幾度となく水に漬けられては取り出されるため、一連の操作の中で有効成分の大半は洗い流されてしまう。これは、浸漬処理においても、予措工程の最終段階で浸漬する場合を除き当てはまるものである。したがって、これらの処理においては、十分な防除効果を挙げるために本来必要とされる量の有効成分の他に、前記の流失分を見越した余剰の有効成分量が必要である。これは、種子処理(特に、粉衣処理や塗沫処理)が、水田に薬剤を散布する方法よりも多くの薬剤を要することを意味しており、農作業の省力化に資することは評価できるとしても、経済的に不利な方法であることは否めないものである。 Furthermore, powder coating treatment, smearing treatment, and the like also have problems in the physical utilization rate of active ingredients. Even if the active ingredients are attached to the surface of the rice seeds by these treatments, the rice seeds are immersed in water several times and taken out in the subsequent preparatory steps. Most of it will be washed away. This is also true in the dipping process, except when dipping at the final stage of the pretreatment process. Therefore, in these treatments, in addition to the amount of the active ingredient originally required for obtaining a sufficient control effect, an extra active ingredient amount in anticipation of the above-mentioned loss is required. This means that seed treatment (especially powder coating treatment and smear treatment) requires more chemicals than the method of spraying chemicals on paddy fields, and it can be evaluated that it contributes to labor saving in farm work. However, it cannot be denied that this is an economically disadvantageous method.
一方、イネ病害防除剤の有効成分のひとつとして、3−(3,4−ジクロロイソチアゾール−5−イルメトキシ)−1,2−ベンゾチアゾール−1,1−ジオキシド(以下、化合物1ということがある)が知られている(特許文献2)。しかしながら、化合物1をイネ種子に作用させたときの有効性、施用量、薬害(安全性)等については具体的に検討されておらず、種子処理剤としての化合物1の実用性は全く不明である。 On the other hand, as an active ingredient of a rice disease control agent, 3- (3,4-dichloroisothiazol-5-ylmethoxy) -1,2-benzothiazole-1,1-dioxide (hereinafter sometimes referred to as Compound 1) ) Is known (Patent Document 2). However, the effectiveness, application rate, phytotoxicity (safety), etc. when compound 1 is allowed to act on rice seeds have not been specifically studied, and the practicality of compound 1 as a seed treatment agent is completely unknown. is there.
本発明は、上述のような問題点に鑑み、イネへの安全性が高く、また、簡便且つ効率的で労働負荷が少なく、十分な効果を発揮し得るイネの病害防除方法を提供することを目的とする。 In view of the above-mentioned problems, the present invention provides a rice disease control method that is highly safe to rice, simple and efficient, has a low labor load, and can exhibit a sufficient effect. Objective.
上記目的達成のため、本発明者らは各方面から鋭意検討した結果、化合物1を発芽前のイネ種子に直接作用させる方法が、イネに薬害を生じることなく、当該イネ種子の発芽から収穫期に至るまでの長期に渡って病害防除効果を持続でき、特に粉衣処理又は塗沫処理によって水田に薬剤を散布する方法よりも少ない薬剤の量で優れた病害防除効果を発揮できることを見出し、本発明を完成させるに至った。 In order to achieve the above object, as a result of intensive studies from various directions, the present inventors have found that the method in which Compound 1 directly acts on rice seeds before germination does not cause phytotoxicity in rice, and the rice seeds are germinated and harvested. It was found that the disease control effect can be sustained over a long period of time, and that it is possible to demonstrate an excellent disease control effect with a smaller amount of drug than the method of spraying the drug on paddy fields by powder coating treatment or smear treatment. The invention has been completed.
すなわち、本発明の実施形態は次のとおりである。
(1)下記化1にて示される化合物である3−(3,4−ジクロロイソチアゾール−5−イルメトキシ)−1,2−ベンゾチアゾール−1,1−ジオキシドを有効成分とする農薬組成物(農薬製剤)を用いて、播種前のイネ種子に浸漬処理、粉衣処理、塗沫処理、噴付処理から選ばれる少なくともひとつの処理を行うことを特徴とするイネ病害防除方法。
(2)播種前のイネ種子に粉衣処理又は塗沫処理を行うことを特徴とする(1)に記載の方法。
(3)3−(3,4−ジクロロイソチアゾール−5−イルメトキシ)−1,2−ベンゾチアゾール−1,1−ジオキシドを、イネ種子150g当たり0.3〜0.7gの割合で用いて処理することを特徴とする(2)に記載の方法。
(4)イネいもち病の防除である(1)〜(3)のいずれか1つに記載の方法。
(5)イネの生育後期(例えば、出穂前15日から出穂後25日までの間)において、病害防除処理を行わないことを特徴とする(1)〜(4)のいずれか1つに記載の方法。That is, the embodiment of the present invention is as follows.
(1) Agrochemical composition containing 3- (3,4-dichloroisothiazol-5-ylmethoxy) -1,2-benzothiazole-1,1-dioxide, which is a compound represented by the following chemical formula 1, as an active ingredient ( A rice disease control method comprising performing at least one treatment selected from a soaking treatment, a powder coating treatment, a smearing treatment, and a spraying treatment on rice seeds before sowing using an agrochemical formulation.
(2) The method according to (1), wherein the rice seed before sowing is subjected to a dressing process or a smearing process.
(3) Treatment with 3- (3,4-dichloroisothiazol-5-ylmethoxy) -1,2-benzothiazole-1,1-dioxide at a rate of 0.3 to 0.7 g per 150 g of rice seeds The method according to (2), characterized in that:
(4) The method according to any one of (1) to (3), which is control of rice blast.
(5) In any one of (1) to (4), the disease control treatment is not performed in the late growth period of rice (for example, from 15 days before heading to 25 days after heading). the method of.
本発明によれば、イネの薬害を伴うことなく、少ない労働負荷でイネ病害を効果的に防除することができる。特に、イネいもち病には卓効を奏し、昨今問題となっている薬剤耐性菌によるイネいもち病をも防除できる。また、係る病害防除効果は、育苗期から収穫期に至るまで持続するため、イネの生育後期において追加の病害防除作業を必要としない。また、本発明のうち粉衣処理又は塗沫処理を行う実施態様においては、慣行の防除方法よりも少量の薬剤でイネ病害を防除することができ、安全性・経済性の点でより有効である。 ADVANTAGE OF THE INVENTION According to this invention, a rice disease can be effectively controlled with little labor load, without accompanying the phytotoxicity of rice. In particular, it is effective for rice blast and can control rice blast caused by drug-resistant bacteria, which has recently become a problem. Moreover, since the disease control effect lasts from the seedling season to the harvest season, no additional disease control work is required in the late growth stage of rice. In the embodiment of the present invention in which the dressing process or the smearing process is performed, rice diseases can be controlled with a smaller amount of chemicals than the conventional control method, which is more effective in terms of safety and economy. is there.
本発明では、下記化1にて示される化合物である3−(3,4−ジクロロイソチアゾール−5−イルメトキシ)−1,2−ベンゾチアゾール−1,1−ジオキシドを有効成分として使用する。この化合物(以下、化合物1ともいう)の製造方法は、上記特許文献2に開示されており、取得に際して特段の障害はない。 In the present invention, 3- (3,4-dichloroisothiazol-5-ylmethoxy) -1,2-benzothiazole-1,1-dioxide, which is a compound represented by the following chemical formula 1, is used as an active ingredient. The method for producing this compound (hereinafter also referred to as Compound 1) is disclosed in Patent Document 2 described above, and there is no particular obstacle in obtaining it.
本発明においては、化合物1を有効成分とする農薬組成物(農薬製剤)を用いて、播種前のイネ種子に浸漬処理、粉衣処理、塗沫処理、噴付処理から選ばれる少なくともひとつの処理を行う。浸漬処理は、予措工程に使用される水の一回分について薬剤を投入した薬液を用いる方法が例示される。また、粉衣処理は、予措工程前のイネ種子に粉末状の薬剤をまぶす方法が例示され、塗沫処理又は噴付処理は、予措工程前のイネ種子に水に溶いた薬剤を滴下又はスプレーする方法が例示される。 In the present invention, at least one treatment selected from a soaking treatment, a dressing treatment, a smearing treatment, and a spraying treatment on rice seed before sowing using an agrochemical composition (agrochemical formulation) containing Compound 1 as an active ingredient. I do. Examples of the immersion treatment include a method of using a chemical solution in which a chemical is added for one batch of water used in the pretreatment process. In addition, the powder coating treatment is exemplified by a method in which a powdered medicine is applied to the rice seeds before the pretreatment process. Or the method of spraying is illustrated.
薬剤の形態としては、化合物1それ自体を用いてもよいし、所望により、化合物1に農薬補助剤として一般的に用いられる添加成分を配合して、乳剤、粉剤、水和剤、粒状水和剤、フロアブル等の形態に製剤した組成物を用いることもできる。後者の場合は、実際の処理態様に照らして好適な剤型を選択し、使用すればよい。例えば、種子粉衣を行うのであれば、化合物の粉末を種子に付着させる必要があることから、粉剤等の粉状製剤組成物が好適である。一方、種子浸漬、種子塗沫及び種子噴付では薬剤を水に希釈し所定の濃度として使用するため、乳剤又はフロアブル等の液状製剤組成物、或いは薬剤が水中でよく分散・懸濁するように設計された水和剤又は粒状水和剤等の固形製剤組成物が用い易い。しかし、形態や処理方法との組み合わせについて上記に限定されるものではない。 As the form of the drug, compound 1 itself may be used, and if desired, compound 1, an additive component generally used as an agrochemical adjuvant is blended, and emulsion, powder, wettable powder, granular hydration Compositions formulated in the form of agents, flowables and the like can also be used. In the latter case, a suitable dosage form may be selected and used in light of the actual treatment mode. For example, if seed dressing is performed, a powdery composition such as a powder is preferable because it is necessary to attach the compound powder to the seed. On the other hand, in seed soaking, seed smearing, and seed spraying, the drug is diluted in water and used as a prescribed concentration, so that the liquid formulation composition such as emulsion or flowable, or the drug is well dispersed and suspended in water Solid pharmaceutical compositions such as designed wettable powders or granular wettable powders are easy to use. However, the combination with the form and the processing method is not limited to the above.
前記の農薬補助剤としては、固体担体又は液体担体等の担体、界面活性剤、結合剤、粘着付与剤、増粘剤、着色剤、拡展剤、展着剤、凍結防止剤、固結防止剤、崩壊剤、分解防止剤等が挙げられる。その他必要に応じ、防腐剤や、植物片等を添加成分として用いてもよい。これらの添加成分は単独で用いてもよいし、又、2種以上を組み合わせて用いてもよい。 Examples of the agrochemical adjuvant include a carrier such as a solid carrier or a liquid carrier, a surfactant, a binder, a tackifier, a thickener, a colorant, a spreading agent, a spreading agent, an antifreeze agent, and an anti-caking agent. Agents, disintegrants, decomposition inhibitors and the like. In addition, you may use a preservative, a plant piece, etc. as an additional component as needed. These additive components may be used alone or in combination of two or more.
固体担体としては、例えば石英、クレー、カオリナイト、ピロフィライト、セリサイト、タルク、ベントナイト、酸性白土、アタパルジャイト、ゼオライト、珪藻土等の天然鉱物質類;炭酸カルシウム、硫酸アンモニウム、硫酸ナトリウム、塩化カリウム等の無機塩類;合成ケイ酸、合成ケイ酸塩、デンプン、セルロース、植物粉末等の有機固体担体;ポリエチレン、ポリプロピレン、ポリ塩化ビニリデン等のプラスチック担体等が挙げられる。 Examples of the solid carrier include natural minerals such as quartz, clay, kaolinite, pyrophyllite, sericite, talc, bentonite, acid clay, attapulgite, zeolite, diatomaceous earth; inorganic such as calcium carbonate, ammonium sulfate, sodium sulfate, potassium chloride Salts: Organic solid carriers such as synthetic silicic acid, synthetic silicates, starches, celluloses and plant powders; Plastic carriers such as polyethylene, polypropylene and polyvinylidene chloride.
液体担体としては、例えば、メタノール、エタノール、プロパノール、イソプロパノール、ブタノール等の一価アルコール類;エチレングリコール、ジエチレングリコール、プロピレングリコール、ヘキシレングリコール、ポリエチレングリコール、ポリプロピレングリコール、グリセリン等の多価アルコール類;プロピレン系グリコールエーテル等の多価アルコール系化合物類;アセトン、メチルエチルケトン、メチルイソブチルケトン、ジイソブチルケトン、シクロヘキサノン等のケトン類;エチルエーテル、ジオキサン、エチレングリコールモノエチルエーテル、ジプロピルエーテル、テトラヒドロフラン等のエーテル類;ノルマルパラフィン、ナフテン、イソパラフィン、ケロシン、鉱油等の脂肪族炭化水素類;ベンゼン、トルエン、キシレン、ソルベントナフサ、アルキルナフタレン等の芳香族炭化水素類;ジクロロエタン、クロロホルム、四塩化炭素等のハロゲン化炭化水素類;酢酸エチル、ジイソプロピルフタレート、ジブチルフタレート、ジオクチルフタレート、アジピン酸ジメチル等のエステル類;γ−ブチロラクトン等のラクトン類;ジメチルホルムアミド、ジエチルホルムアミド、ジメチルアセトアミド、N−アルキルピロリジノン等のアミド類;アセトニトリル等のニトリル類;ジメチルスルホキシド等の硫黄化合物類;大豆油、ナタネ油、綿実油、ヒマシ油等の植物油;水等を挙げることができる。 Examples of the liquid carrier include monohydric alcohols such as methanol, ethanol, propanol, isopropanol, and butanol; polyhydric alcohols such as ethylene glycol, diethylene glycol, propylene glycol, hexylene glycol, polyethylene glycol, polypropylene glycol, and glycerin; propylene Polyhydric alcohol compounds such as glycol ethers; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, and cyclohexanone; ethers such as ethyl ether, dioxane, ethylene glycol monoethyl ether, dipropyl ether, and tetrahydrofuran; Aliphatic hydrocarbons such as normal paraffin, naphthene, isoparaffin, kerosene, mineral oil; benzene, toluene Aromatic hydrocarbons such as xylene, solvent naphtha and alkylnaphthalene; Halogenated hydrocarbons such as dichloroethane, chloroform and carbon tetrachloride; Esters such as ethyl acetate, diisopropyl phthalate, dibutyl phthalate, dioctyl phthalate and dimethyl adipate; Lactones such as γ-butyrolactone; Amides such as dimethylformamide, diethylformamide, dimethylacetamide, N-alkylpyrrolidinone; Nitriles such as acetonitrile; Sulfur compounds such as dimethylsulfoxide; Soybean oil, Rapeseed oil, Cottonseed oil, Castor oil And vegetable oils such as water;
界面活性剤としては、例えば、ソルビタン脂肪酸エステル、ポリオキシエチレンソルビタン脂肪酸エステル、ショ糖脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、ポリオキシエチレン樹脂酸エステル、ポリオキシエチレン脂肪酸ジエステル、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルキルフェニルエーテル、ポリオキシエチレンジアルキルフェニルエーテル、ポリオキシエチレンアルキルフェニルエーテルホルマリン縮合物、ポリオキシエチレンポリオキシプロピレンブロックポリマー、アルキルポリオキシエチレンポリプロピレンブロックポリマーエーテル、ポリオキシエチレン脂肪酸アミド、ポリオキシエチレン脂肪酸ビスフェニルエーテル、ポリアルキレンベンジルフェニルエーテル、ポリオキシアルキレンスチリルフェニルエーテル、アセチレンジオール、ポリオキシアルキレン付加アセチレンジオール、ポリオキシエチレンひまし油、ポリオキシエチレン硬化ひまし油等の非イオン性界面活性剤;アルキル硫酸塩、ポリオキシエチレンアルキルエーテル硫酸塩、ポリオキシエチレンアルキルフェニルエーテル硫酸塩、ポリオキシエチレンスチリルフェニルエーテル硫酸塩、アルキルベンゼンスルホン酸塩、リグニンスルホン酸塩、アルキルスルホコハク酸塩、ナフタレンスルホン酸塩、アルキルナフタレンスルホン酸塩、ナフタレンスルホン酸ホルマリン縮合物の塩、アルキルナフタレンスルホン酸ホルマリン縮合物の塩、脂肪酸塩、ポリカルボン酸塩、N−メチル脂肪酸サルコシネート、樹脂酸塩、ポリオキシエチレンアルキルエーテルリン酸塩、ポリオキシエチレンアルキルフェニルエーテルリン酸塩等のアニオン性界面活性剤;ラウリルアミン塩酸塩、ステアリルアミン塩酸塩、オレイルアミン塩酸塩、ステアリルアミン酢酸塩、ステアリルアミノプロピルアミン酢酸塩、アルキルトリメチルアンモニウムクロライド、アルキルジメチルベンザルコニウムクロライド、ポリオキシエチレンアルキルアミン塩等のカチオン界面活性剤;アルキルアミン脂肪酸塩、アルキルベタイン、アルキルアミンオキシド等の両性界面活性剤;ポリエーテル変性ポリジメチルシロキサン、ポリメチルアルキルシロキサン等のシリコーン系界面活性剤;ペルフルオロアルキルスルホン酸、ペルフルオロアルキルカルボン酸、フッ素テロマーアルコール等のフッ素系界面活性剤等が挙げられる。 Examples of the surfactant include sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, sucrose fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene resin acid ester, polyoxyethylene fatty acid diester, polyoxyethylene alkyl ether, polyoxyethylene alkyl ether, Oxyethylene alkyl phenyl ether, polyoxyethylene dialkyl phenyl ether, polyoxyethylene alkyl phenyl ether formalin condensate, polyoxyethylene polyoxypropylene block polymer, alkyl polyoxyethylene polypropylene block polymer ether, polyoxyethylene fatty acid amide, polyoxyethylene Fatty acid bisphenyl ether, polyalkylene benzyl phenyl ether, polyoxyalkyl Nonionic surfactants such as styryl phenyl ether, acetylene diol, polyoxyalkylene-added acetylene diol, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil; alkyl sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyls Phenyl ether sulfate, polyoxyethylene styryl phenyl ether sulfate, alkylbenzene sulfonate, lignin sulfonate, alkyl sulfosuccinate, naphthalene sulfonate, alkyl naphthalene sulfonate, naphthalene sulfonate formalin condensate salt, alkyl Naphthalenesulfonic acid formalin condensate salt, fatty acid salt, polycarboxylate, N-methyl fatty acid sarcosinate, resin acid salt, polyoxyethylene alkyl ether Anionic surfactants such as phosphates, polyoxyethylene alkylphenyl ether phosphates; laurylamine hydrochloride, stearylamine hydrochloride, oleylamine hydrochloride, stearylamine acetate, stearylaminopropylamine acetate, alkyltrimethylammonium Cationic surfactants such as chloride, alkyldimethylbenzalkonium chloride, polyoxyethylene alkylamine salts; amphoteric surfactants such as alkylamine fatty acid salts, alkylbetaines, alkylamine oxides; polyether-modified polydimethylsiloxane, polymethylalkyl Examples thereof include silicone surfactants such as siloxane; fluorine surfactants such as perfluoroalkyl sulfonic acid, perfluoroalkyl carboxylic acid, and fluorine telomer alcohol.
結合剤や粘着付与剤としては、例えば、カルボキシメチルセルロースやその塩、デキストリン、水溶性デンプン、キサンタンガム、グアーガム、蔗糖、ポリビニルピロリドン、アラビアゴム、ポリビニルアルコール、ポリビニルアセテート、ポリアクリル酸ナトリウム、平均分子量6000〜20000のポリエチレングリコール、平均分子量10万〜500万のポリエチレンオキサイド、セファリン、レシチン等が挙げられる。 Examples of the binder and tackifier include carboxymethyl cellulose and salts thereof, dextrin, water-soluble starch, xanthan gum, guar gum, sucrose, polyvinyl pyrrolidone, gum arabic, polyvinyl alcohol, polyvinyl acetate, sodium polyacrylate, and an average molecular weight of 6000 to 600. Examples include 20,000 polyethylene glycol, polyethylene oxide having an average molecular weight of 100,000 to 5,000,000, cephalin, and lecithin.
増粘剤としては、例えば、キサンタンガム、グアーガム、ウェランガム、カルボキシメチルセルロース、ポリビニルピロリドン、カルボキシビニルポリマー、アクリル系ポリマー、デンプン系化合物及び水溶性多糖類のような水溶性高分子;高純度ベントナイト、フュームドシリカのような無機微粉等が挙げられる。 Examples of the thickener include water-soluble polymers such as xanthan gum, guar gum, welan gum, carboxymethyl cellulose, polyvinylpyrrolidone, carboxyvinyl polymer, acrylic polymer, starch compound and water-soluble polysaccharide; high-purity bentonite, fumed Examples thereof include inorganic fine powders such as silica.
着色剤としては、例えば、酸化鉄、酸化チタン、プルシアンブルーのような無機顔料;アリザリン染料、アゾ染料、金属フタロシアニン染料のような有機染料等が挙げられる。 Examples of the colorant include inorganic pigments such as iron oxide, titanium oxide, and Prussian blue; organic dyes such as alizarin dyes, azo dyes, and metal phthalocyanine dyes.
拡展剤としては、例えば、シリコーン系界面活性剤、セルロース粉末、デキストリン、加工デンプン、ポリアミノカルボン酸キレート化合物、架橋ポリビニルピロリドン、マレイン酸とスチレン類の共重合体、(メタ)アクリル酸系共重合体、多価アルコールからなるポリマーとジカルボン酸無水物とのハーフエステル、ポリスチレンスルホン酸の水溶性塩等が挙げられる。 Examples of the spreading agent include silicone surfactant, cellulose powder, dextrin, modified starch, polyaminocarboxylic acid chelate compound, crosslinked polyvinylpyrrolidone, a copolymer of maleic acid and styrene, (meth) acrylic acid copolymer Examples thereof include half-esters of polymers, polycarboxylic alcohols and dicarboxylic anhydrides, and water-soluble salts of polystyrene sulfonic acid.
展着剤としては、例えば、パラフィン、テルペン、ポリアミド樹脂、ポリアクリル酸塩、ポリオキシエチレン、ワックス、ポリビニルアルキルエーテル、アルキルフェノールホルマリン縮合物、合成樹脂エマルション等が挙げられる。 Examples of the spreading agent include paraffin, terpene, polyamide resin, polyacrylate, polyoxyethylene, wax, polyvinyl alkyl ether, alkylphenol formalin condensate, and synthetic resin emulsion.
凍結防止剤としては、例えば、エチレングリコール、ジエチレングリコール、プロピレングリコール、グリセリン等の多価アルコール類;尿素等が挙げられる。 Examples of the antifreezing agent include polyhydric alcohols such as ethylene glycol, diethylene glycol, propylene glycol, and glycerin; urea and the like.
固結防止剤としては、例えば、デンプン、アルギン酸、マンノース、ガラクトース等の多糖類、ポリビニルピロリドン、フュームドシリカ、エステルガム、石油樹脂等が挙げられる。 Examples of the anti-caking agent include polysaccharides such as starch, alginic acid, mannose, and galactose, polyvinyl pyrrolidone, fumed silica, ester gum, and petroleum resin.
崩壊剤としては、例えば、トリポリリン酸ソーダ、ヘキサメタリン酸ソーダ、ステアリン酸金属塩、セルロース粉末、デキストリン、メタクリル酸エステル系の共重合体、ポリビニルピロリドン、ポリアミノカルボン酸キレート化合物、スルホン化スチレン・イソブチレン・無水マレイン酸共重合体、デンプン・ポリアクリロニトリルグラフト共重合体等が挙げられる。 Disintegrants include, for example, sodium tripolyphosphate, sodium hexametaphosphate, metal stearate, cellulose powder, dextrin, methacrylate copolymer, polyvinylpyrrolidone, polyaminocarboxylic acid chelate compound, sulfonated styrene / isobutylene / anhydrous Examples thereof include maleic acid copolymers and starch / polyacrylonitrile graft copolymers.
分解防止剤としては、例えば、ゼオライト、生石灰、酸化マグネシウム等の乾燥剤;サリチル酸系、ベンゾフェノン系等の紫外線吸収剤;硫酸、酢酸、酢酸ナトリウム、リン酸、リン酸水素アンモニウム、リン酸二水素カリウム、リン酸ナトリウム、ホウ酸、ホウ酸ナトリウム、炭酸水素ナトリウム、炭酸ナトリウム、水酸化ナトリウム又はそれらの混合物等のpH調整剤等が挙げられる。 Examples of the decomposition inhibitor include desiccants such as zeolite, quicklime, and magnesium oxide; UV absorbers such as salicylic acid and benzophenone; sulfuric acid, acetic acid, sodium acetate, phosphoric acid, ammonium hydrogen phosphate, potassium dihydrogen phosphate And pH adjusting agents such as sodium phosphate, boric acid, sodium borate, sodium hydrogen carbonate, sodium carbonate, sodium hydroxide or a mixture thereof.
防腐剤としては、例えば、ソルビン酸カリウム、1,2−ベンズチアゾリン−3−オン等が挙げられる。 Examples of the preservative include potassium sorbate, 1,2-benzthiazolin-3-one, and the like.
植物片としては、例えば、おがくず、ヤシガラ、トウモロコシ穂軸、タバコ茎等が挙げられる。 Examples of plant pieces include sawdust, coconut husk, corn cob, tobacco stem, and the like.
なお、このような薬剤は常法により製造することができ、例えば、以下の製造方法が挙げられる。
(1)化合物1、界面活性剤及びその他所望により添加される農薬補助剤を有機溶剤等の液体担体に溶解する乳剤の製造方法。
(2)化合物1、固体担体及びその他所望により添加される農薬補助剤を適当な粉砕機で混合粉砕する粉剤の製造方法。
(3)化合物1、界面活性剤、固体担体及びその他所望により添加される農薬補助剤を適当な粉砕機で混合粉砕する水和剤の製造方法。
(4)化合物1、界面活性剤及びその他所望により添加される農薬補助剤の混合物(予め、その一部又は全部を粉砕しておいてもよい)に適当量の水を加えて混練した後、所定の孔径の穴を開けたスクリーンから押し出し造粒し、乾燥する粒状水和剤の製造方法。
(5)化合物1、界面活性剤及びその他所望により添加される農薬補助剤を水等の液体担体に分散し、適当な粉砕機で混合粉砕するフロアブルの製造方法。In addition, such a chemical | medical agent can be manufactured by a conventional method, for example, the following manufacturing methods are mentioned.
(1) A method for producing an emulsion in which compound 1, a surfactant and other agricultural chemical adjuvants added as desired are dissolved in a liquid carrier such as an organic solvent.
(2) A method for producing a powder by mixing and grinding Compound 1, a solid carrier, and other agricultural chemical adjuvants added as desired with an appropriate grinding machine.
(3) A method for producing a wettable powder, in which compound 1, a surfactant, a solid carrier and other agricultural chemical adjuvants added as desired are mixed and pulverized with an appropriate pulverizer.
(4) After adding and kneading an appropriate amount of water to a mixture of compound 1, surfactant and other agricultural chemical adjuvants to be added as desired (a part or all of which may be pulverized in advance) A method for producing a granular wettable powder which is extruded and granulated from a screen having a predetermined hole diameter and dried.
(5) A flowable production method in which Compound 1, a surfactant, and other agricultural chemical adjuvants added as desired are dispersed in a liquid carrier such as water and mixed and pulverized by an appropriate pulverizer.
薬剤における化合物1の含有割合は、全量に対して質量基準で通常30〜95%、好ましくは50〜90%の範囲で選ばれる。各農薬補助剤の含有割合は、前記の化合物1の含有割合や選択した剤型により異なるが、通常5〜70%、好ましくは10〜50%の範囲で選ばれる。特に、種子粉衣、種子塗沫又は種子噴付に供する製剤組成物においては、薬剤が付着するイネ種子の表面積に限りがあるという事情から、化合物1を濃厚に含有する(例えば50%以上、好ましくは80%以上含有とする)製剤が好ましい。 The content ratio of Compound 1 in the drug is usually selected in the range of 30 to 95%, preferably 50 to 90% on the basis of mass. The content ratio of each agricultural chemical adjuvant varies depending on the content ratio of the compound 1 and the selected dosage form, but is usually selected in the range of 5 to 70%, preferably 10 to 50%. In particular, in the preparation composition to be used for seed dressing, seed smearing or seed spraying, compound 1 is concentrated (for example, 50% or more, for reasons of limited surface area of rice seeds to which the drug adheres). The preparation is preferably 80% or more.
本発明における化合物1の施用量は、イネ種子の乾燥重量150g当たり0.1〜1.3g程度が例示されるが、好ましくは0.1〜1g、更に好ましくは0.3〜0.7gの範囲である。特に、粉衣処理又は塗沫処理においては、当業界の技術常識に反し、播種後の通常の施用量の半分程度であるイネ種子の乾燥重量150g当たり0.3〜0.7gでも充分な効果が奏されるのが特徴である。 The application amount of Compound 1 in the present invention is about 0.1 to 1.3 g per 150 g of dry weight of rice seeds, preferably 0.1 to 1 g, more preferably 0.3 to 0.7 g. It is a range. In particular, in powder coating treatment or smearing treatment, it is contrary to technical common knowledge in the industry, and even if 0.3 to 0.7 g per 150 g dry weight of rice seeds, which is about half of the usual application rate after sowing, sufficient effect It is a feature that is played.
更に本発明では、所望により、その実施と同時に又は前後して、別のイネ病害虫防除剤を種子処理してもよい。ここで言う別のイネ病害虫防除剤としては、例えば、オキソリニック酸、プロクロラズ、イプコナゾール、水酸化第二銅、トリフルミゾール、チウラム、ペフラゾエート、ベノミル、塩基性塩化銅、フルジオキソニル等の殺菌剤;トリコデルマ・アトロビリデ、タラロマイセス・フラバス等のイネ病害防除活性を示す有用微生物;MEP、カルタップ、イミダクロプリド等の殺虫剤を挙げることができるが、これらに限定されず、種子処理に適用可能なイネ病害虫防除剤であれば任意に併用してよい。 Furthermore, in the present invention, if desired, another rice pest control agent may be treated with seeds simultaneously with or before or after the implementation. Other rice pest control agents mentioned here include, for example, fungicides such as oxolinic acid, prochloraz, ipconazole, cupric hydroxide, triflumizole, thiuram, pefazoate, benomyl, basic copper chloride, fludioxonil; Useful microorganisms exhibiting rice disease control activity such as Atrobilide, Talalomyces flavus; insecticides such as MEP, cartap, imidacloprid, etc., but are not limited to them, and any rice pest control agent applicable to seed treatment Any combination may be used.
前記の中でも、特に、有用微生物はそれ自体が菌であり、別の殺菌剤と混合使用した際に失活するという問題がしばしば発生するが、化合物1はトリコデルマ・アトロビリデ等の微生物には影響を及ぼさないため、好適な組み合わせとして併用しうる。 Among the above, particularly useful microorganisms are fungi themselves, and often cause inactivation when mixed with another fungicide, but Compound 1 has an effect on microorganisms such as Trichoderma atrobide. Therefore, it can be used as a suitable combination.
尚、化合物1と別のイネ病害虫防除剤とを同時に種子処理する場合には、各々単独の有効成分又はその製剤組成物を別個に用意して、使用時に混合される現場調合物の形態、即ちタンクミックスの形態で用いることもできるし、予め両方の有効成分を含む混合剤としてパッケージングした単一の製剤組成物の形態、即ちレディミックスの形態で適用してもよい。 When compound 1 and another rice pest control agent are treated at the same time, each active ingredient or its pharmaceutical composition is separately prepared and mixed in the form of an on-site preparation, It may be used in the form of a tank mix, or may be applied in the form of a single pharmaceutical composition, ie, a ready mix, previously packaged as a mixture containing both active ingredients.
種子処理を施したイネ種子は、常法に従って、即ち、土壌を敷き詰めた育苗箱に播種し、適切な管理のもとで発芽させればよい。30cm×60cmの育苗箱1枚当たりに播種するイネ種子の量は、通常100〜200g、好ましくは150g程度である。 Rice seeds that have been subjected to seed treatment may be sown in a conventional manner, that is, seeded in a seedling box spread with soil and germinated under appropriate management. The amount of rice seeds sown per 30 cm × 60 cm seedling box is usually about 100 to 200 g, preferably about 150 g.
或いは、種子処理を施したイネ種子を、そのまま水田に播種してもよい。この場合、水田10アール当たりに播種するイネ種子の量は、通常2000〜4000g、好ましくは3000g程度である。 Alternatively, rice seeds that have been subjected to seed treatment may be sown in rice fields as they are. In this case, the amount of rice seeds sown per 10 ares of paddy field is usually 2000 to 4000 g, preferably about 3000 g.
本発明は、上記の処理による病害防除効果が育苗期から収穫期に至るまで持続するため、このように播種した後、特にイネの生育後期(例えば、出穂前15日から出穂後25日までの間)において、改めて病害防除処理を行う必要がないことも特徴である。なお、播種後の全ての生育期間において病害虫防除処理を行わないことも可能であり、逆に、播種後に病害虫防除処理を再度行うことを制限するものでもない。 In the present invention, since the disease control effect by the above treatment is sustained from the seedling stage to the harvesting period, after sowing, the late growth stage of rice (for example, from 15 days before heading to 25 days after heading) It is also a feature that it is not necessary to perform disease control processing again during In addition, it is also possible not to perform a pest control process in all the growth periods after sowing, and conversely, it does not restrict performing a pest control process again after sowing.
このように、本発明のイネ病害防除方法は、種子処理という処理態様のうち有利な点である作業労働の簡便性はそのままに、当該処理態様の課題であったイネへの安全性、経済性及び長期残効性等を克服した、非常に有用且つ実用的なものである。 As described above, the rice disease control method of the present invention has the convenience of work labor, which is an advantage of the treatment mode of seed treatment, and is safe and economical to rice, which is a problem of the treatment mode. In addition, it is extremely useful and practical, overcoming long-term residual effects and the like.
以下、本発明の実施例について述べるが、本発明はこれらの実施例のみに限定されるものではなく、本発明の技術的思想内においてこれらの様々な変形が可能である。
尚、以下の実施例及び比較例において「部」は「質量部」を意味する。また、イネ種子の品種については、実施例1〜4及び比較例1〜7では「ひとめぼれ」を、実施例5〜6及び比較例8〜9では「コシヒカリ」をそれぞれ供試した。Examples of the present invention will be described below, but the present invention is not limited to these examples, and various modifications can be made within the technical idea of the present invention.
In the following examples and comparative examples, “part” means “part by mass”. As for rice seed varieties, “Hitomebore” was used in Examples 1-4 and Comparative Examples 1-7, and “Koshihikari” was used in Examples 5-6 and Comparative Examples 8-9.
(製剤例1)
化合物1を85部、アルキルベンゼンスルホン酸塩1部、リグニンスルホン酸塩5部、ポリビニルアルコール4部及び珪藻土5部を衝撃式粉砕機を用いて混合粉砕することにより、化合物1を85%含有する水和剤を得た。(Formulation example 1)
Water containing 85% of Compound 1 by mixing and grinding 85 parts of Compound 1, 1 part of alkylbenzene sulfonate, 5 parts of lignin sulfonate, 4 parts of polyvinyl alcohol and 5 parts of diatomaceous earth using an impact pulverizer A balm was obtained.
(製剤例2)
化合物1を50部、ポリオキシエチレンアルキルフェニルエーテル5部、リグニンスルホン酸塩6部、キサンタンガム0.24部、ジメチルポリシロキサン0.02部及び水38.74部を混合し、ガラスビーズを粉砕媒体とする湿式粉砕機を用いて粉砕することにより、化合物1を50%含有するフロアブルを得た。(Formulation example 2)
50 parts of Compound 1, 5 parts of polyoxyethylene alkylphenyl ether, 6 parts of lignin sulfonate, 0.24 part of xanthan gum, 0.02 part of dimethylpolysiloxane and 38.74 parts of water are mixed, and the glass beads are ground. A flowable containing 50% of Compound 1 was obtained by pulverization using a wet pulverizer.
(対照剤1)
市販の粒状水和剤:商品名「側条オリゼメート顆粒水和剤(Meiji Seika ファルマ株式会社製品)」を供試した。本品はイネ病害防除剤としてプロベナゾールを48%含有する。(Control 1)
Commercially available granular wettable powder: A trade name “Side-rowed oryzate granular wettable powder (product of Meiji Seika Pharma Co., Ltd.)” was used. This product contains 48% probenazole as a rice disease control agent.
(対照剤2)
化合物1を2部、アルキルベンゼンスルホン酸塩0.35部、水溶性デンプン3部及びクレー91.65部に適量の水を加えて混練した後、押し出し造粒機を用いて目開き径0.8mmのスクリーンより押し出し造粒した。流動層乾燥機を用いて品温70℃で乾燥し、篩い分けることにより、化合物1を2%含有する粒剤を得た。(Control 2)
2 parts of Compound 1, 0.35 part of alkylbenzene sulfonate, 3 parts of water-soluble starch and 91.65 parts of clay were kneaded with an appropriate amount of water, and then the opening diameter was 0.8 mm using an extrusion granulator. It was extruded and granulated from the screen. A granule containing 2% of Compound 1 was obtained by drying at a product temperature of 70 ° C. using a fluidized bed dryer and sieving.
(対照剤3)
市販の粒剤:商品名「ファーストオリゼプリンス粒剤6(Meiji Seika ファルマ株式会社製品)」を供試した。本品はイネ病害防除剤としてプロベナゾール20%を含有する他、殺虫剤フィプロニルを0.6%含む。(Control 3)
Commercially available granule: The product name “First Orize Prince Granule 6 (Meiji Seika Pharma Co., Ltd. product)” was used. This product contains 20% probenazole as a rice disease control agent and 0.6% insecticide fipronil.
(実施例1)
10gの乾燥イネ種子と水67μLを混和し、イネ種子を湿らせた。ここに製剤例1の水和剤0.05gを加え(化合物1として0.043g、イネ種子150g当たり0.64gに相当)、よく混和することでイネ種子に有効成分を粉衣した。このイネ種子を40mLの水に浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子3.7gを、土壌を充填した直径7.5cmのプラスチックカップに播種した。(Example 1)
10 g of dried rice seed and 67 μL of water were mixed to wet the rice seed. To this, 0.05 g of the wettable powder of Formulation Example 1 was added (0.043 g as Compound 1, equivalent to 0.64 g per 150 g of rice seeds), and the active ingredients were dressed on rice seeds by mixing well. The rice seeds were soaked in 40 mL of water, soaked at 15 ° C. for 1 day, and then soaked for 4 days after changing the water. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. 3.7 g of this rice seed was sown in a 7.5 cm diameter plastic cup filled with soil.
(実施例2)
製剤例2のフロアブルを水で7.5倍に希釈した。10gの乾燥イネ種子に前記の希釈液0.3mLを加え(化合物1として0.020g、イネ種子150g当たり0.30gに相当)、よく混和することでイネ種子に有効成分を塗沫した。このイネ種子を40mLの水に浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子3.7gを、土壌を充填した直径7.5cmのプラスチックカップに播種した。(Example 2)
The flowable of Formulation Example 2 was diluted 7.5 times with water. To 10 g of dried rice seeds, 0.3 mL of the diluted solution was added (0.020 g as compound 1, equivalent to 0.30 g per 150 g of rice seeds), and the active ingredients were smeared on the rice seeds by mixing well. The rice seeds were soaked in 40 mL of water, soaked at 15 ° C. for 1 day, and then soaked for 4 days after changing the water. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. 3.7 g of this rice seed was sown in a 7.5 cm diameter plastic cup filled with soil.
(実施例3)
製剤例1の水和剤を水で200倍に希釈した。10gの乾燥イネ種子を前記の希釈液20mLに浸し(化合物1として0.085g、イネ種子150g当たり1.3gに相当)、15℃で1日間浸種した後、薬液を捨て、40mLの水を加えて、15℃で4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子3.7gを、土壌を充填した直径7.5cmのプラスチックカップに播種した。Example 3
The wettable powder of Formulation Example 1 was diluted 200 times with water. Immerse 10 g of dried rice seeds in 20 mL of the above diluent (0.085 g as compound 1; equivalent to 1.3 g per 150 g of rice seeds), soak for 1 day at 15 ° C., then discard the drug solution and add 40 mL of water. And soaking at 15 ° C. for 4 days. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. 3.7 g of this rice seed was sown in a 7.5 cm diameter plastic cup filled with soil.
(実施例4)
10gの乾燥イネ種子を水40mLに浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を捨て、製剤例1の水和剤を温水で200倍に希釈した薬液20mLを加えて(化合物1として0.085g、イネ種子150g当たり1.3gに相当)、30℃で1日間催芽処理を行った。このイネ種子3.7gを、土壌を充填した直径7.5cmのプラスチックカップに播種した。Example 4
10 g of dried rice seeds were soaked in 40 mL of water and soaked at 15 ° C. for 1 day, then the water was changed and soaked for another 4 days. Next, the water was discarded, and 20 mL of a drug solution obtained by diluting the wettable powder of Formulation Example 1 200 times with warm water was added (0.085 g as Compound 1 and equivalent to 1.3 g per 150 g of rice seeds), and 30 days at 30 ° C. Germination treatment was performed. 3.7 g of this rice seed was sown in a 7.5 cm diameter plastic cup filled with soil.
(実施例5)
150gの乾燥イネ種子と水1mLを混和し、イネ種子を湿らせた。ここに製剤例1の水和剤0.75gを加え(化合物1として0.64g)、よく混和することでイネ種子に有効成分を粉衣した。このイネ種子を1Lの水に浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子の全量を、土壌を充填した30cm×60cmの育苗箱に播種した。(Example 5)
150 g of dry rice seed and 1 mL of water were mixed to wet the rice seed. To this was added 0.75 g of the wettable powder of Formulation Example 1 (0.64 g as Compound 1) and mixed well to dress the active ingredient on rice seeds. The rice seeds were soaked in 1 L of water, soaked at 15 ° C. for 1 day, and then soaked for 4 days after changing the water. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. The total amount of this rice seed was sown in a 30 cm × 60 cm seedling box filled with soil.
(実施例6)
製剤例2のフロアブルを水で7.5倍に希釈した。150gの乾燥イネ種子に前記の希釈液4.5mLを加え(化合物1として0.30g)、よく混和することでイネ種子に有効成分を塗沫した。このイネ種子を1Lの水に浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子の全量を、土壌を充填した30cm×60cmの育苗箱に播種した。(Example 6)
The flowable of Formulation Example 2 was diluted 7.5 times with water. To 150 g of dried rice seeds, 4.5 mL of the above diluent was added (0.30 g as Compound 1), and the active ingredients were smeared on the rice seeds by mixing well. The rice seeds were soaked in 1 L of water, soaked at 15 ° C. for 1 day, and then soaked for 4 days after changing the water. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. The total amount of this rice seed was sown in a 30 cm × 60 cm seedling box filled with soil.
(比較例1)
製剤例1の水和剤に代えて、対照剤1の粒状水和剤を磨り潰したものを用いた(プロベナゾールとして0.024g、イネ種子150g当たり0.36gに相当)。その余の点は、実施例1と同様の操作を行った。(Comparative Example 1)
Instead of the wettable powder of Formulation Example 1, a powdered powder of control powder 1 was used (0.024 g as probenazole, corresponding to 0.36 g per 150 g of rice seeds). For other points, the same operation as in Example 1 was performed.
(比較例2)
製剤例2のフロアブルに代えて、対照剤1の粒状水和剤を乳鉢で磨り潰したものを用いた(プロベナゾールとして0.019g、イネ種子150g当たり0.29gに相当)。その余の点は、実施例2の操作を踏襲した。(Comparative Example 2)
Instead of the flowable of Formulation Example 2, a powder obtained by grinding granular wettable powder of Control Agent 1 with a mortar (corresponding to 0.019 g as probenazole, corresponding to 0.29 g per 150 g of rice seeds) was used. The other points followed the operation of Example 2.
(比較例3)
製剤例1の水和剤に代えて、対照剤1の粒状水和剤を使用した(プロベナゾールとして0.048g、イネ種子150g当たり0.72gに相当)。その余の点は、実施例3と同様の操作を行った。(Comparative Example 3)
Instead of the wettable powder of Formulation Example 1, granular wettable powder of Control 1 was used (0.048 g as probenazole, corresponding to 0.72 g per 150 g of rice seeds). For other points, the same operation as in Example 3 was performed.
(比較例4)
製剤例1の水和剤に代えて、対照剤1の粒状水和剤を使用した(プロベナゾールとして0.048g、イネ種子150g当たり0.72gに相当)。その余の点は、実施例4と同様の操作を行った。(Comparative Example 4)
Instead of the wettable powder of Formulation Example 1, granular wettable powder of Control 1 was used (0.048 g as probenazole, corresponding to 0.72 g per 150 g of rice seeds). For other points, the same operation as in Example 4 was performed.
(比較例5)
10gの乾燥イネ種子を水40mLに浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子3.7gを、土壌を充填した直径7.5cmのプラスチックカップに播種し、更に対照剤2の粒剤1.2gを処理した(化合物1として0.025g、イネ種子150g当たり1.0gに相当)。(Comparative Example 5)
10 g of dried rice seeds were soaked in 40 mL of water and soaked at 15 ° C. for 1 day, then the water was changed and soaked for another 4 days. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. 3.7 g of this rice seed was sown in a plastic cup having a diameter of 7.5 cm filled with soil, and further treated with 1.2 g of granules of Control 2 (0.025 g as Compound 1 and 1.25 per 150 g of rice seed). Equivalent to 0 g).
(比較例6)
10gの乾燥イネ種子を水40mLに浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子3.7gを、土壌を充填した直径7.5cmのプラスチックカップに播種し、更に対照剤3の粒剤1.2gを処理した(プロベナゾールとして0.25g、イネ種子150g当たり10gに相当)。(Comparative Example 6)
10 g of dried rice seeds were soaked in 40 mL of water and soaked at 15 ° C. for 1 day, then the water was changed and soaked for another 4 days. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. 3.7 g of this rice seed was sown in a plastic cup with a diameter of 7.5 cm filled with soil, and further treated with 1.2 g of granule of Control 3 (0.25 g as probenazole, equivalent to 10 g per 150 g of rice seed) ).
(比較例7)
10gの乾燥イネ種子を水40mLに浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子3.7gを、土壌を充填した直径7.5cmのプラスチックカップに播種した。
なお、この比較例7の作物区分を「無処理区」という場合もある。(Comparative Example 7)
10 g of dried rice seeds were soaked in 40 mL of water and soaked at 15 ° C. for 1 day, then the water was changed and soaked for another 4 days. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. 3.7 g of this rice seed was sown in a 7.5 cm diameter plastic cup filled with soil.
In addition, the crop classification of the comparative example 7 may be referred to as “untreated section”.
(比較例8)
150gの乾燥イネ種子を水1Lに浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子の全量を、土壌を充填した30cm×60cmの育苗箱に播種し、更に対照剤2の粒剤50gを処理した(化合物1として1.0gに相当)。(Comparative Example 8)
150 g of dried rice seeds were soaked in 1 L of water and soaked at 15 ° C. for 1 day, then the water was changed and soaked for another 4 days. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. The total amount of this rice seed was sown in a 30 cm × 60 cm seedling box filled with soil, and further treated with 50 g of the granule of Control 2 (corresponding to 1.0 g as Compound 1).
(比較例9)
150gの乾燥イネ種子を水1Lに浸し、15℃で1日間浸種した後、水を換えて更に4日間浸種した。次いで、水を温水に換え、30℃で1日間催芽処理を行った。このイネ種子の全量を、土壌を充填した30cm×60cmの育苗箱に播種した。
なお、この比較例9の作物区分を「無処理区」という場合もある。(Comparative Example 9)
150 g of dried rice seeds were soaked in 1 L of water and soaked at 15 ° C. for 1 day, then the water was changed and soaked for another 4 days. Next, the water was changed to warm water, and sprouting treatment was performed at 30 ° C. for 1 day. The total amount of this rice seed was sown in a 30 cm × 60 cm seedling box filled with soil.
In addition, the crop classification of the comparative example 9 may be referred to as “untreated section”.
(試験例1)
実施例1〜4及び比較例1〜7のプラスチックカップに覆土し、30℃に設定した加温育苗器に3日間入れて出芽させ、当該時点での出芽状況を確認した。その結果を図1に示す。次いで、このカップを温室に移動し、20℃で管理した。播種14日後に、草丈の生育状況について達観調査を行い、生育抑制の度合いを、0(無処理区同等)〜10(枯死)までの11段階の指数で評価した。その結果を表1に示す。(Test Example 1)
The plastic cups of Examples 1 to 4 and Comparative Examples 1 to 7 were covered with soil, placed in a warm seedling incubator set at 30 ° C. for 3 days to germinate, and the emergence status at that time was confirmed. The result is shown in FIG. The cup was then moved to the greenhouse and managed at 20 ° C. After 14 days of sowing, an objective survey was conducted on the growth status of the plant height, and the degree of growth inhibition was evaluated by an index of 11 levels from 0 (equivalent to the untreated area) to 10 (dead). The results are shown in Table 1.
各実施例の方法では、いずれも薬害が認められず、イネに対しては化合物1を用いた播種時処理の比較例5(苗箱施用)と同等の安全性を示した。一方、プロベナゾールを用いた比較例の方法は、播種時処理の比較例6では問題なかったが、種子処理を行った比較例1〜4では、プロベナゾールの処理量が前記比較例6の10分の1未満であるにも拘らず、全て出芽遅延や生育抑制等の薬害が認められた。 In each of the methods of the Examples, no phytotoxicity was observed, and the same safety as that of Comparative Example 5 (seedling box application) of the treatment at the time of sowing using Compound 1 was shown for rice. On the other hand, the method of the comparative example using probenazole had no problem in the comparative example 6 of the treatment at the time of sowing, but in the comparative examples 1 to 4 in which the seed treatment was performed, the treatment amount of probenazole was 10 minutes of the comparative example 6. Despite being less than 1, phytotoxicity such as delayed budding and growth suppression was observed.
(試験例2)
実施例5〜6及び比較例8〜9の育苗箱に覆土し、30℃に設定した加温育苗器に3日間入れて出芽させた。その後、育苗箱をビニールハウス内に移して7日間、更に露地で11日間育苗し、3〜4葉期まで生育したイネを、湛水した水田0.5アールに移植した。移植58日後に調査を行い、各作物区分の40株について、株当たりの葉いもち病の発病程度を、下記に示す表2の基準に従って病斑面積として評価し、そこから病斑面積歩合を求め、防除価を算出した。結果を表3に示す。(Test Example 2)
The seedling boxes of Examples 5 to 6 and Comparative Examples 8 to 9 were covered with soil, and placed in a warm seedling incubator set at 30 ° C. for 3 days to germinate. Thereafter, the nursery box was moved into the greenhouse, and the seedlings were grown for 7 days and further in the open field for 11 days, and the rice grown to the 3-4 leaf stage was transplanted to 0.5 R watered paddy field. A survey was conducted 58 days after transplantation, and the degree of leaf blast disease per plant was evaluated as the lesion area according to the criteria shown in Table 2 below for 40 strains in each crop category, and the lesion area ratio was determined therefrom. The control value was calculated. The results are shown in Table 3.
各実施例の方法は、化合物1を播種時処理した比較例8(苗箱施用)よりも少ない使用薬量で、葉いもち病に対して同等以上の防除効果を発揮した。 The method of each Example demonstrated the control effect more than equivalent with respect to a leaf blast disease with the usage-amount smaller than the comparative example 8 (seedling box application) which processed the compound 1 at the time of sowing.
本発明を要約すれば次のとおりである。 The present invention is summarized as follows.
すなわち本発明は、イネへの安全性が高く、また、簡便且つ効率的で労働負荷が少なく、十分な効果を発揮し得るイネの病害防除方法を提供することを目的とする。 That is, an object of the present invention is to provide a rice disease control method that has high safety to rice, is simple and efficient, has a low labor load, and can exert a sufficient effect.
そして、3−(3,4−ジクロロイソチアゾール−5−イルメトキシ)−1,2−ベンゾチアゾール−1,1−ジオキシドを有効成分とする農薬組成物を用いて、発芽前のイネ種子に浸漬処理、粉衣処理、塗沫処理、噴付処理から選ばれる少なくともひとつの処理を行うことにより、イネに薬害を生じることなく、当該イネ種子の発芽から収穫期に至るまでの長期に渡って病害防除効果を持続できる。 Then, using an agrochemical composition containing 3- (3,4-dichloroisothiazol-5-ylmethoxy) -1,2-benzothiazole-1,1-dioxide as an active ingredient, the rice seed before germination is immersed in the treatment. By performing at least one treatment selected from powdering treatment, smearing treatment, and spraying treatment, disease control over a long period from germination of the rice seed to the harvesting period without causing phytotoxicity to rice The effect can be sustained.
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WO2007129454A1 (en) * | 2006-05-08 | 2007-11-15 | Kumiai Chemical Industry Co., Ltd. | 1,2-benzisothiazole derivative, and agricultural or horticultural plant disease-controlling agent |
JP2010155807A (en) * | 2008-12-27 | 2010-07-15 | Kumiai Chem Ind Co Ltd | Pest-controlling agent for agriculture and horticulture, and method for controlling pest |
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JP2008127335A (en) | 2006-11-21 | 2008-06-05 | Mitsui Chemicals Inc | Method for preventing diseases of plants |
JP2008266170A (en) * | 2007-04-18 | 2008-11-06 | Nissan Chem Ind Ltd | Herbicide composition |
JP5448186B2 (en) * | 2010-06-23 | 2014-03-19 | キャタピラー エス エー アール エル | Electric motor torque control device for work machines |
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WO2007129454A1 (en) * | 2006-05-08 | 2007-11-15 | Kumiai Chemical Industry Co., Ltd. | 1,2-benzisothiazole derivative, and agricultural or horticultural plant disease-controlling agent |
JP2010155807A (en) * | 2008-12-27 | 2010-07-15 | Kumiai Chem Ind Co Ltd | Pest-controlling agent for agriculture and horticulture, and method for controlling pest |
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AR086614A1 (en) | 2014-01-08 |
WO2012165511A1 (en) | 2012-12-06 |
TW201311146A (en) | 2013-03-16 |
JP6006203B2 (en) | 2016-10-12 |
TWI583308B (en) | 2017-05-21 |
CN103763919A (en) | 2014-04-30 |
KR101902041B1 (en) | 2018-09-27 |
KR20140037860A (en) | 2014-03-27 |
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